alb10709079

Iodine reduction by tin, 1 of 3

Iodine reduction by tin, 1 of 3. Tin(II) sulphate (SnSO4) solution has pale yellow colour (left vial). Iodine (I2) dissolved in water with added potassium iodide (KI) and polyvinyl alcohol has deep blue colour (right vial). When tin(II) sulphate solution is added drop by drop to the iodine solution (middle vial), it becomes colorless, as I2 is reduced to I- and Sn2+ is oxidized to Sn4+: Sn2+ + I2 -> Sn4+ + I-.
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Title:
Iodine reduction by tin, 1 of 3
Caption:
Iodine reduction by tin, 1 of 3. Tin(II) sulphate (SnSO4) solution has pale yellow colour (left vial). Iodine (I2) dissolved in water with added potassium iodide (KI) and polyvinyl alcohol has deep blue colour (right vial). When tin(II) sulphate solution is added drop by drop to the iodine solution (middle vial), it becomes colorless, as I2 is reduced to I- and Sn2+ is oxidized to Sn4+: Sn2+ + I2 -> Sn4+ + I-.
Credit:
Album / Turtle Rock Scientific/Science Source
Releases:
Model: No - Property: No
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Image size:
5156 x 3433 px | 50.6 MB
Print size:
43.7 x 29.1 cm | 17.2 x 11.4 in (300 dpi)
Keywords:
CHEMICAL CHEMISTRY I2 IODINE OXIDATION REACTION REDOX RÉDUCTION SNSO4 SULPHATE TIN